Acute tonsillitis or tonsillitis is an inflammation of the tonsils caused by a bacterial or viral infection. The classic form of the course of the disease is always accompanied by intense fever in the early days of the disease. But sometimes mild tonsillitis symptoms occur in adults without fever. This indicates a mild form of arising pathology or a weakened immune system that does not respond to infection. Angina is a disease that has been known to mankind since ancient times. Description of tonsillectomy was found in the works of the legendary Paracelsus. Based on this, we can assume that in those days, angina was one of the most serious and dangerous diseases. After the introduction of bacteriological methods of research into medical practice, tonsillitis began to be classified in accordance with the pathogen that provoked the development of the pathological condition.